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Total 11 documents matching your query.

1. Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: <n4is@comcast.net>; Date: Tue, 23 May 2023 12:55:36 -0400; Hi Folks I am following the conversation about LOG RX antennas, I understand the pain from a noise city lot on 160m. it is hard. I am using Waller Flag's vertical, since 2006, and horizontal since 20; /archives//html/Topband/2023-05/msg00008.html (7,629 bytes)
2. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: <n0tt1@juno.com>; Date: Tue, 23 May 2023 20:04:24 -0600; "Any new ideas on high performance preamps for 160m?? " The only thing I can suggest is to build the front end of the preamp as if it were a JW Miller style crystal radio, followed by the amp itself.; /archives//html/Topband/2023-05/msg00009.html (9,189 bytes)
3. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: "GEORGE WALLNER" <aa7jv@atlanticbb.net>; Date: Wed, 24 May 2023 02:25:30 -0400; I have built, for DXpedition use, a very selective RX front-end for 160 m for simultaneously operating CW and FT8 on shared TX and RX antennas with 800 feet of separation. The LC filter had 8 dB loss; /archives//html/Topband/2023-05/msg00010.html (10,052 bytes)
4. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 24 May 2023 02:06:33 -0700; George's work on this system is first class engineering, and has revolutionized TopBand expeditions, allowing simultaneous use of the two best small signal modes, CW and FT8, by expeditions transmitt; /archives//html/Topband/2023-05/msg00011.html (9,417 bytes)
5. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Charles Morrison <charles.morrison.n1rr@gmail.com>; Date: Wed, 24 May 2023 14:10:30 -0400; George, Jim, Where can we find George's work for these items ?? -Charlie N1RR -- -Charlie N1RR 401-742-7240 <(401)%20742-7240> 8AM - 9PM *E-mail*: n1rr@n1rr.com *Website*: www.n1rr.com *Youtube chann; /archives//html/Topband/2023-05/msg00012.html (10,823 bytes)
6. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 24 May 2023 11:35:45 -0700; I heard him present it at Visalia in 2019; he presented it the next month at Dayton. 73, Jim K9YC _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector; /archives//html/Topband/2023-05/msg00013.html (8,131 bytes)
7. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 24 May 2023 14:05:05 -0700; Just looked at his AA7JV qrz page, where there's extensive description of their Oceania trip and Radio In A Box, with lots of photos. George's deep pockets are the result of some important mass-marke; /archives//html/Topband/2023-05/msg00014.html (8,393 bytes)
8. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jeff Blaine <KeepWalking188@ac0c.com>; Date: Wed, 24 May 2023 16:57:08 -0500; The RIB is an interesting concept. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com Just looked at his AA7JV qrz page, where there's extensive description of their Oceania trip and Radio In A Box; /archives//html/Topband/2023-05/msg00015.html (8,893 bytes)
9. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: <john@kk9a.com>; Date: Thu, 25 May 2023 22:57:29 -0400; Tim Duffy's AA7JV R.I.B. interview is on Youtube: https://www.youtube.com/watch?v=1XqBhp7M2Uk John KK9A George, Jim, Where can we find George's work for these items ?? -Charlie N1RR _________________; /archives//html/Topband/2023-05/msg00016.html (7,716 bytes)
10. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jeff Blaine <KeepWalking188@ac0c.com>; Date: Fri, 26 May 2023 21:53:16 -0500; Saw the interview. Fascinating. The guys have done a ton of work and that approach makes sense for these environmentally hyper-sensitive QTH. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com Jo; /archives//html/Topband/2023-05/msg00018.html (8,859 bytes)
11. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Fri, 26 May 2023 20:15:21 -0700; Makes sense for lots of locations. Using batteries to buffer a smaller gen that can support a power amp but run in economode means dragging much less weight and space for the gen and fuel. George fir; /archives//html/Topband/2023-05/msg00019.html (9,495 bytes)

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